Air-valve for radiators.



P. -W. LEUTHESSER. AIR VALVE FOR RADIATOR-S. APPLICATION FILED JULY zo, 1905.

Patented Deo'. 28, 1909.

"within the chamber ot' a shell or casing, the

un rrED sfrafrns PATENT onirica. FED W. LEUTHESSER, 0F CIiICAiGO, ILLNOS, .CSSIIGNOR T0 MONASH-YOUNKER COM- PANY, OF CHICAGO, ILLINOIS, .A CORPORATION 0F ILLINOS.

ArnfvALLvE ron namarons.

Specification of Letters Patent.

944,333. Patented Dee. 2s, ieee.

applicati@ filed my 2o, 1905. serial No. 270,513.

ion in normal or properly adjusted position; Fig. t a top or lan view,.showing the adjustable plug a vanced inwardly so as to project the stem of the cushion or yieldable support above the end plate or top of the plug throwing the grooves in the stem and lplug out of alinement, thereb preventing further advance of the plugg: *i 5 a sec.- Ational elevation. of the adjustab e seating plug; Fig. 6. a sectional elevation of the cushion or yi ldable bearing for the expansible member or stern; and Fig. 7 a sectional elevation of the adjustable seating plug, and

To cLL whom it may concern:

Be it known that I, FRED W. LnU'rHnssnR, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Air-Valves for Radiators, of which the following vis a specification.

yThis invent-ion relates more particularly to that type of air valves for radiators in which an expansible member or stem is located expansible member having an axial longitudinal hole for the passage of air, steam and the water of condensation, and having its nonacting end ixedly secured in place and its acting end coperating withan adjustable seat. It isa delicate and somewhat difficult matter to properly locate the seat in correctrelation to the acting end of the stem, and even when adjusted it often occurs that the operator considers the 'seat not properly adjusted and thereupon changes its relation to theacting end of the expansible member or stem, with the result that, as the expansiblemember or stem is lengthened under the etects of heat, its acting end will engage the adjustable seat with sufficient force to buckle or even break the expansible member or stem, thereby destroying the utility ot' the valve.

The objects of the present invention are to furnish an adjustable seat for the eX- pansible member or' stem having a yielding or cushioning) action by which danger and yliability of uckling or breaking the expansible member 'or stem is avoided; to enable the party who adjusts the valve to know positively just when the correct adjustment is obtained; and to prevent any overpressure from the lengthening of the expansible member or stem from affecting the working of the valve. f 'a The invention consists in the features of construction and combinations of parts hereinafter described and'claimed. terior screw thread, in

'[n the drawings Figure l is a sectional eleshown; and the interior screw thread envation of the air valve of the invention,with gages an exterior screw thread on the body the adjustable seat and its cushion or yieldor wall of the adjustable seating plug able cap, with the parts iny normal position; which plug has an interior chamber D lo- Fig. 2 a detail in section showing the end of cated below its tcp wall d, and its body or the expansible memberor stem, the adjustside wall el', in .which chamber is located the able seat and ,its cushion or yieldable bearcushion A for furnishing a sea-t for the actin in l; Fig. 3 a 'top or plan viewof the;adjustend of the expansible 'niembe'ur or stem an abe plug and the slidable stem ef thecushconstituting an essential feature of the presbearing and the controlling spring. j

The valve shown has an outer shell or ycasingA with an interior chamber A and on one side of the outer 'shell or casing is a nipple a for attachment of the valve to the radiator, and having a passage a' leadin into the chamber A between the 'top an bottom of such chamber. The expansible member or stem B is located in the chamber `A, with its acting end in line, or nearly so, with the top 'of the chamber, when the member or stem is normal; and this expansible member or stem has an axiallongitudinal passage b for escaping air as usual. The lower end ot the main shell creasing A has a neck a2 with an interior shoulder a, in the construction shown. A thimble or socket rC is entered into the neck a2 and this thimble or socket C has an outer wall c and an inner tube c with an axial passage `coinciding .with the axial passage in the expansible member or stem, with a space between the outer wall and the inner tube in which is securely entered the lowervend or" the expansible member or stem. The bottom wall c* of the thimble or socket has rim c5, against which the end of the coupling impinges tightly, when the parts are assembled.

The upper end of the main shell or casing A has an exterior screw thread and an inthe arrangement a depending a `full elevation of the cushion or yleldable jectsfroin the vcenter of 1s freefto `slide. "the stem E Vi5' l l* of the hollow 'adjustable seating plug, and

or.. other l and adjusted asrequired, andthe end of l alinement with th the screw driver,

' acting endof closing ca can .packing f3 between the un plat/eef thelclosing cap and the end face of casing. The lower end of the shell or casceives a 'coupling nut G, having a shoulder annular exterior rim f and as sh "coll face i ent invention.v

, against the acting 'end 'member or stem ,"stem `when lengthened, the expansible meinx "wall f and rim or flange c5 and tightlyclose the lower end of the shell, the same as the cap F closes the upper end. y he mainier of assembling is as follows: The expansible member or stem is entered into the thimble or socket Gand the socket entered tightly into the neck a2. The coup ling collar is entered into the` coup nut G and the end of the shell or casing, for the, contact face l1. to impinge against'y the edge of the rim c5, making justable hollow plug, with the cushion cap E and thespring E2 entered intoY the chainberDwith therstem E projecting into the hole d, is `threaded into the upper end of the The cushidn for seating of the expansible is inthe vform ofva head or ro- I the plate or dis. E- `and passes `into* a hole da formed tl'iere'forf4 inthe top plate or wall of the adjustable hollow plug through which hole the stem E? A coils rin Ezencircles and the `bo y ,o the j or plate al a screw driver yuntil the-,yieldablecap cushion abuts against the acting end of the expansible' member or stem. Such contact yis indicated on further movement of the plug by the guidev stem or stud E projecting above the plane of the outer face of the top plate or wall of the adjlistablefhollow plug, in which position the two grooves d2 and e2 are thrown out of alinement. t When lthis cond" t is s ring is of the pro er' tension to mainthe under face e o the cushion in engagement with the inwardly turned edge d* be engaged by the vend of the expansible member or ber'or stem, when the parts are normal, being out of contact with the cushion, as shown' -i'n Fig.

' ition is ment of the plug possible andthe operator knows at once that tiey bearing cap or yieldable contact hasengaged the' acting end ot' the expansible meinber or stem'.

.cross groove d2 forthe end of a screw driver, suitable instrument, by means of :which the plug 'can be entered into place t e stem e" groove e2 which, when'the parts are in 'normal relation, is in e cross groove (Z2, so that in turning the hollow seating plug; to its adjusted position, carries with 1t t lerstem andthe cushion; which mav thus be located and in proper relation to the the expansible -member or hollow plug carries the seating cap or bearing E away from-the end of the seatingp a sullicient distance.l to leave,` are normal, the required space for the air to pansible member or stem. of th causes its acting end to engage with the seat-v ing cap or bearing, closing the inlet into the passage. b of t e expansible member'for stem, and the lengthenin of the expansible ymember or stein will not uckle or break the stem, as the 'bearing or yieldable contact will recede against the pressure of the spring Without affecting the condition of theexpansible member kling or breaking.

stem. g; cap F is entered onto theex- V of the main shell or casing; d as shown, this ca has .a .top plate or a bodyl or side wall ff with an in- `erior screw thread for entering the cap onto the end of the shell or casing, and the top wallhas-therein twoholes f2 for the rece 'tion of a turnke, by means of which t e e entered into-place.` A of any suitable material is located der face of the top wall or Vstem isvfurnished b the cap or4 lmarin' plate. E, which is under'l spring control; an the point attyhich the/seating cap is adjusted is regulated by advancing or recedp u the she creasing, so that when the closing cap is fully entereda tiht joint will be. ormed for the ofthe shell or.

ing the adjustable ing has an exterior screw thread which reth unison the party adjusting instant the guide stem ofth beyond the plane ofthe the adjustable plugthat the seating plate or caring is in engagement with' the actin@` end of the expansible memberl or stein, an that when so engaged the inlet to the passage -of the expansible member or stein is knowsat the e cap projects top plate orwall of or intu-rned portion g; and this nut has entered thereinto a coupling collar H with an tengaging the shoulder or inturned end g of the coupling nut,

own, the inner end of the coupling ar is rounded so as to furnish a seating to impinge against the edge of the a sufficient backward turn of the adjustable escape through the axial passage of the eX-v or stem -as regards buc'- he seat for lthe expansiblemember or and inasiijiuch as e plug-and the stem of the cap move in:l

nut-threaded onto the lower a close tight' fit. The ad.-

ioo

iio

where the notch of the guide stem is above 4ments could be used ing cap within the chamber of the hollow plug, a stem for the seating cap slidable through the top wall 'of the hollow plug, and a spring controlling the yield of the seating cap, substantially as described.

'2. In an air valve for radiators, the comclosed, requiring a sufficient recession of the-A adjustable hollow plug in order to obtain the proper seating relation. Itwill also be seen that it is impossible for anyone to so advance the adjustable seating plug a sufficient distance to produce injurious effects, as when this plug is advanced to a point an adjustable hollow plug, a seating cap within the chamber of the hollow plug, a stem for the seating cap slidable through the top wall of the hollow plug', and a coi sprin within the chamber of the hollow plug and abutting at its ends against the seating cap and the top wall oft-he plug and controlling the yield of the seating cap, substantially as described.

3: In an air .valve for radiators, qthe com biuation of an expansible member or stem, an adjustable hollow plug havin groove in its top plate, a

yieldab e seatlng cap within the chamber of the hollow plug,

the plane/of the top wall ot' the plug, the inserting instrument is at once disengage from the notch of the plug thereby preventing further advance of the plug. While vthe special feature of the present invention` namely, the adjustable hollow plug and the yieldable seating icap, are shown in connection with an expansible member or stem having a longitudinal pas sage, it is evident that these parts or elein connection with an expansible member or stem having a solid body. It is also to be understood that the adjustable hollow plug with the yieldable and a stem for the seating cap slidab e cap can be used in connection with other through the wall of the hollow plug and having in its outer end a cross groove to coo erate with Y wall of the plug, substantially as described. FRED w., LEUTHEssER. Y

lVitnesss:

OSCAR W. BOND, PAULINE BECKMAN.

types of air valves in which there is a longitudinal movement ofA the part controlling the outlet for the air, steam or water of condensation.

What I claim is:

l. In an air valve Vfor radiators, the combination of an expansible member or stem,. an adjustable hollow plug, a yieldable seattl CI'OSS the cross groove in the top bination of an expansible member or stem, 

